双重思想意味着在头脑中同时持有两种相互矛盾的信念，并接受它们两者。

Every mathematical problem has a solution; it's just a matter of finding the right perspective.

The fear of death follows from the fear of life. A man who lives fully is prepared to die at any time.

The only true heroism in the world is to see the world as it is and still love it.

结构应该生长，而不是被强加。